The oceans cover approximately ________ percent of Earth's surface
A) 70 B) 60 C) 40 D) 50
A
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The above map graphically represents
A) U.S. students studying abroad. B) U.S. expatriate destinations. C) refugees from the U.S. D) contraceptives provided by the U.S. Agency for International Development. E) medical personnel sent to help fight epidemics and zoonoses.
More than half of all land purchased internationally—to ensure the buying country's domestic food supply—is in
A) Africa. B) East Asia. C) North America. D) South America. E) Australia.
If a widow's peak hairline is dominant and a straight hairline is recessive, then a person with a
A. straight hairline must be a heterozygote. B. widow's peak hairline must be a homozygote. C. widow's peak hairline must be a heterozygote. D. straight hairline must be a homozygote.
The U.S. National Academy of Sciences estimates that 13 ________ pounds of litter enters the world's oceans each year
A) hundred B) thousand C) million D) billion E) trillion